DB Content access s7-1200

I have a structure in a global DB. The stuct called ALARMS is made of bools and a few integers. Now in the middle of the project I am having to change the order of the alarms in the structure. I know that in 300 and 200 you could do access via name or address(offset). Is there an option to access the content of the structure via name in s7-1200 i.e how to change the offset of the alarms without changing it in the code. I had the db set to optimized when I first created it. If someone could point me to the right direction, I would be very greatful.

Thanks,

Romendra

Alarms struct 4.0( 4.0 is the offset)

alarm1 bool 0.0

alarm2 bool 0.1

alarm3 bool 0.2

. so on

Now i need to change the order like

alarm3

alarm2

alarm1

So the question is how do i change the order without it affecting my code i,e DB.Alarms.alarm1 stays the same but the offset of alarm1 will actually change from 4.0 to 4.2??

Thanks

Romendra

Procedure

To set the block access, proceed as follows:

1. Open the "Program blocks" folder in the project tree.

2. Right-click on the block whose block access you want to change.

3. Select the "Properties" command in the shortcut menu.

   The properties dialog box of the block opens.

4. Click "Attributes" in the area navigation.

5. Disable the "Optimized block access" option.

6. Confirm your entries with "OK".

Then do compile. Now you have DB with offsets.

In "Program blocks" copy your DB and paste.

Now you have two DB-s with different names but same DB nr. e.g. "Data_block_1"[DB1] and "Data_block_2"[DB1]

Open second DB ("Data_block_2"[DB1]) and rename "alarm1" to "alarm3" etc.

Delete first DB ("Data_block_1"[DB1]).

Rename second DB as first -"Data_block_1".

Symbolic addressing remains the same but absolute is changed.

Some pictures